"The battle of the Marne was an example of this, as was also our advance from St. Omer and Hazebrouck to the line of the River Lys at the commencement of this battle. The role which our armies in the west have consequently been called upon to fulfill has been to occupy strong defensive positions, holding ground gained and inviting the enemy's attack, and to throw back these attacks, causing the enemy heavy losses in his retreat and following him up with powerful and successful counter-attacks to complete his discomfiture. "The value and significance of operations of this nature since the commencement of hostilities by the Allies' forces in the west lie in the fact that at the moment when the eastern provinces of Germany are in imminent danger of being overrun by the numerous and powerful armies of Russia, nearly the whole active army of Germany is tied down to a line of trenches extending from Verdun, on the Alsatian frontier, to the sea at Nieuport, east of Dunkirk, a distance of 260 miles, where they are held, with much reduced numbers and impaired morale, by the successful action of our troops in the west. "I cannot speak too highly of the services rendered by the Royal Artillery throughout the battle. In spite of the fact that the enemy brought up in support of his attacks guns of great range and shell power, our men have succeeded throughout in preventing the enemy from establishing anything in the nature of superiority in artillery. The skill, courage, and energy displayed by the commanders of the Royal Artillery have been very marked. The Royal Engineers have been indefatigable in their efforts to assist the infantry in field, fortification, and trench work. "I deeply regret the heavy casualties which we have suffered, but the nature of the fighting has been very desperate, and we have been assailed by vastly superior numbers. I have every reason to know that throughout the course of the battle we have placed at least three times as many of the enemy hors de combat in dead, wounded and prisoners. "Throughout these operations Gen. Foch has strained his resources to the utmost to afford me all the support he could. An expression of my warm gratitude is also due to Gen. Dubail, commanding the Eighth French Army Corps on my left, and to Gen. de Maud'huy, commanding the Tenth Army Corps on my right." Discussing the details of the engagement from Ypres to Armentieres, Field Marshal Sir John French explains that he was impressed early in October with the necessity of giving the greatest possible support to the northern flank of the Allies in the effort to outflank the Germans and compel them to evacuate their positions. He says that the situation on the Aisne warranted the withdrawal of British troops from positions they held there, as the enemy had been weakened by continual attacks and the fortifications of the Allies much improved.